Dee (letter)
ⓓ
D
-1
Section::::Abstract.
Musical note
22026
D
-1
Section::::Perception of pitch.:Pitch and frequency.

Pitch (music)
77933
D
-1
Section::::History.

Guitar
11846
D
-1
Section::::Tuning practice.

Musical tuning
20817
🅳
🄓
🄳
🅓
D (letter)
⒟
Ｄ
d
d letter
ｄ
dee letter